High-power electromagnetic pulse protection module used for power line

Abstract

The invention discloses a high-power electromagnetic pulse protection module used for a power line. The whole high-power electromagnetic pulse protection module is a comprehensive protection module formed by integration of a time domain transient suppression circuit and a frequency domain wave filtering circuit, and the whole module conducts shielding by using a metal housing. The time domain transient suppression part is formed by combining a voltage dependent resistor high in response speed and a TVS diode in a high-low cooperation mode and includes a voltage dependent resistor M, a voltage dependent resistor M1, a voltage dependent resistor M2, a decoupling inductor L1, a decoupling inductor L2 and the TVS diode; the rear portion of the TVS diode is connected with the frequency domain wave filtering part; the frequency domain wave filtering part is formed through the combination of a pi type wave filtering circuit and a capacitor wave filtering circuit, and includes a capacitor C1, a capacitor C2, an inductance coil L, a capacitor C3 and a capacitor C4, the capacitor C1, the capacitor C2 and the inductance coil L together form the pi type wave filtering circuit, and the capacitor C3 and the capacitor C4 are connected between grounding wires to filter out common-mode interference. According to the module, all circuits are simple, the protection effect passes the inspection of a testing system built by reference to the IEC standard, and the module has a better application and popularization prospect.

Description

Technical field [0001] The present invention relates to the technical field of high-power electromagnetic pulse protection, in particular to a high-power electromagnetic pulse protection module for power lines. Background technique [0002] The development of high-power electromagnetic pulse weapons poses a serious threat to the safety of electronic power systems. High-power electromagnetic pulses have the characteristics of high power, fast pulse rise time, and bandwidth. High-power electromagnetic pulses can be coupled through the power lines of information equipment and conducted into the equipment to cause damage. With the improvement of the degree of microelectronics of electronic equipment, the withstand voltage threshold of the semiconductor devices inside the equipment is getting lower and lower, and the protection of conduction disturbances against power lines has attracted more and more attention. [0003] The use of surge protection modules is an important method to sup...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-power electromagnetic pulse protection module for power lines, which aims to solve the problems of unsatisfactory protection characteristics of existing protection modules, lack of suitable solutions and theoretical basis for the selection of protection devices, etc.

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